doc: remove reference to sslv3 in tls.md

PR-URL: #23745
Fixes: #9822
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: jasnell

Diff for: doc/api/tls.md

@@ -673,7 +673,6 @@ be returned for server sockets or disconnected client sockets.
 
 Example responses include:
 
-* `SSLv3`
 * `TLSv1`
 * `TLSv1.1`
 * `TLSv1.2`